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OPA227_07

更新时间： 2024-11-26 04:35:47
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德州仪器 - TI 运算放大器
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27页 838K
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High Precision, Low Noise OPERATIONAL AMPLIFIERS

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OPA227_07 数据手册

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OPA227  
OPA2227  
OPA4227  
O
PA  
4227  
OP  
A227  
O
PA  
2227  
O
P
A
4
2
2
7
O
P
OPA228  
OPA2228  
OPA4228  
A
2
O
P
A
2
2
7
2
2
7
SBOS110A – MAY 1998 – REVISED JANUARY 2005  
High Precision, Low Noise  
OPERATIONAL AMPLIFIERS  
FEATURES  
ꢀ LOW NOISE: 3nV/√Hz  
DESCRIPTION  
The OPA227 and OPA228 series op amps combine low  
ꢀ WIDE BANDWIDTH:  
noise and wide bandwidth with high precision to make them  
the ideal choice for applications requiring both ac and preci-  
sion dc performance.  
OPA227: 8MHz, 2.3V/µs  
OPA228: 33MHz, 10V/µs  
ꢀ SETTLING TIME: 5µs  
The OPA227 is unity-gain stable and features high slew rate  
(2.3V/µs) and wide bandwidth (8MHz). The OPA228 is opti-  
mized for closed-loop gains of 5 or greater, and offers higher  
speed with a slew rate of 10V/µs and a bandwidth of 33MHz.  
(significant improvement over OP-27)  
ꢀ HIGH CMRR: 138dB  
ꢀ HIGH OPEN-LOOP GAIN: 160dB  
ꢀ LOW INPUT BIAS CURRENT: 10nA max  
ꢀ LOW OFFSET VOLTAGE: 75µV max  
ꢀ WIDE SUPPLY RANGE: ±2.5V to ±18V  
ꢀ OPA227 REPLACES OP-27, LT1007, MAX427  
ꢀ OPA228 REPLACES OP-37, LT1037, MAX437  
ꢀ SINGLE, DUAL, AND QUAD VERSIONS  
The OPA227 and OPA228 series op amps are ideal for  
professional audio equipment. In addition, low quiescent  
current and low cost make them ideal for portable applica-  
tions requiring high precision.  
The OPA227 and OPA228 series op amps are pin-for-pin  
replacements for the industry standard OP-27 and OP-37  
with substantial improvements across the board. The dual  
and quad versions are available for space savings and per-  
channel cost reduction.  
APPLICATIONS  
ꢀ DATA ACQUISITION  
The OPA227, OPA228, OPA2227, and OPA2228 are  
available in DIP-8 and SO-8 packages. The OPA4227 and  
OPA4228 are available in DIP-14 and SO-14 packages  
with standard pin configurations. Operation is specified  
from –40°C to +85°C.  
ꢀ TELECOM EQUIPMENT  
ꢀ GEOPHYSICAL ANALYSIS  
ꢀ VIBRATION ANALYSIS  
ꢀ SPECTRAL ANALYSIS  
ꢀ PROFESSIONAL AUDIO EQUIPMENT  
ꢀ ACTIVE FILTERS  
OPA4227, OPA4228  
ꢀ POWER SUPPLY CONTROL  
Out A  
–In A  
+In A  
V+  
1
2
3
4
5
6
7
14 Out D  
13 –In D  
12 +In D  
11 V–  
SPICE model available for OPA227 at www.ti.com  
A
D
C
OPA2227, OPA2228  
OPA227, OPA228  
Out A  
1
2
3
4
8
7
6
5
V+  
+In B  
–In B  
Out B  
10 +In C  
A
Trim  
–In  
+In  
V–  
1
2
3
4
8
7
6
5
Trim  
V+  
–In A  
+In A  
V–  
Out B  
–In B  
+In B  
B
9
8
–In C  
B
Out C  
Output  
NC  
DIP-14, SO-14  
DIP-8, SO-8  
DIP-8, SO-8  
NC = Not Connected  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 1998-2005, Texas Instruments Incorporated  
www.ti.com  
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